@misc{indiciaee12aed95298c,
  title = {A multivariate model for ordinal trait analysis.},
  author = {S Xu and C Xu},
  year = {2006},
  doi = {10.1038/sj.hdy.6800885},
  url = {https://pubmed.ncbi.nlm.nih.gov/16912701/},
  note = {Source identifier: 16912701}
}